问题

Little Jane was sleepy, so she shook her head and tried to concentrate________she was doing.[ ]

A: on what
B: on when
C: with what
D: with which

正确答案是：

同类题型

your cousin, Kate–She broke her leg and ______ medical treatment since.

Would you please help me with my writing skills?— ________.You can come to my officeevery Saturday.

Coach,can I continue with the training?— Sorry, you can’t ______you haven’t recovered from the knee injury.[ ]

to open the door, but it _____ open

There _________ two soccer games in our school next week.